Coil mounting



H. F OLIVER May 16, 1939.

COIL MOUNTING Filed March 14, 1938 ATTORNEY.

Patented May 16, 1939 PATENT OFFICE COIL MOUNTING Herbert F. Oliver, West Springfield, Mass, as-

signor to F. W. Sickles Company, Springfield,

Mass., a corporation Application March 14,

3 Claims.

This invention relates to improvements in coil manufacture and is directed more particularly to the manufacture of coils having mountings or terminals associated therewith.

The principal objects of the invention are dirooted to the provision of a novel support and mounting or terminal connection for a coil which is simple in form so as to be economical to manufacture and which is easily and readily applied to the support.

It is customary in connection with coils such as used in radio receivers and the like and in fact necessary to provide units which occupy small space and to accomplish this the coils are wound on small cylindrical or tubular supports. The supports employed are of various materials and to associate mountings or terminals therewith holes are provided in the support for fastening these mountings or terminals thereto.

It is needless to say that with these small supports various difficulties and costs are encountcred in providing the small holes for the terminals or mountings. The mountings or terminals are associated with the support and are secured thereto in various relations to meet various requirements so that to meet the various requirements there must be a multiplicity of means for providing the supports with the holes which obviously is expensive.

According to this invention a coil support is provided which carries a pair or pairs of longitudinally extending peripheral grooves that are arranged and adapted so that mountings or terminals of novel form may be snapped into place thereon. And the mountings or terminals may be applied to the support either before or after a coil winding operation and mountings or terminals may be located in any desired relation with respect to one another as well as to a coil or coils which have been or will be formed on the support. It is possible therefor to provide one or more windings on a support with terminals for different windings located as may be desired.

As a special feature of the invention the mounting or terminal of the invention operates with a spring action to yieldingly engage or embrace the support and it may be moved axially of the support and when located as desired a wire end of a coil may be wrapped around the mounting or terminal to hold it in position. As a further feature there is provided an opening in the terminal or mounting for receiving a connecting wire and when a coil end and connecting wire are secured or soldered to the terminal it is made of Massachusetts 1938, Serial No. 195,784

relatively non-yieldable so that it is maintained in the location desired.

Various novel features and advantages of the invention will be hereinafter more fully referred to in connection with the accompanying description of the preferred form thereof, reference being had to the drawing, wherein:

Fig. l is an end elevational view of a support and mounting or terminal of the invention;

Fig. 2 is an elevational view of a support for a coil or coils having a plurality of the mountings or terminals of the invention associated therewith; and

Fig. 3 is a perspective view of a mounting or terminal of the invention to explain how coil and connecting wire may be associated therewith.

Referring now to the drawing more in detail the invention will be fully described.

A support S is shown in Figs. 1 and 2 which may have a pair or a plurality of pairs of grooves 2 in the periphery which extend longitudinally thereof. For convenience adjacent grooves will be referred to as a pair of grooves.

The walls 4 of the grooves 2 which are adjacent to one another are preferably inclined inwardly towards one another as shown in Fig. l. The degree of inclination may be varied of course within wide limits depending upon the size of the support, coil and other variable factors.

The support may be of any suitable material, 1,

such as plastic, ceramic or the like, and it may be formed by casting, extruding, molding, turning, rolling, or the like. The material selected and the particular way of making it will be selected according to the requirements to be met and it may be tubular or not and it may be cylindrical or of some other shape all as may be desired.

A member such as 6 may be utilized as a mounting or terminal and for convenience will be hereinafter called terminal. is made from relatively thin metal which is preferably more or less spring-like. The terminal has downwardly and inwardly extending ears or lugs 8 which are adapted to engage the adjacent walls 4 of adjacent slots 2. The terminal is relatively narrow, that is to say one-eighth or threesixteenths of an inch wide for a small support of one-half inch or so in diameter. Obviously the dimensions may be varied within wide limits depending upon the requirements.

A loop I0 is provided and closely adjacent portions l2 thereof extend downwardly and outwardly therefrom which carry the ears 8. As stated, the terminal is preferably made from material which is more or less spring-like and it is The terminal 6 iii) formed so that normally the ears are spaced apart a distance slightly less than the distance between adjacent walls l of adjacent grooves 2. The terminal being spring-like it may be snapped onto the support in any desired location or of course, it may be slipped thereonto endwise.

To attach the terminal 6 to the support S one ear or lip 3 is inserted in a groove 2 against the inclined wall 4 thereof and pressure is applied to the terminal to cause its other lug 8 to be snapped over and downwardly so that it lies against the inclined wall 4 of the adjacent groove 2.

The support S may be of any length desired and there may be as many grooves or slots 2 or pairs of them and as many of the terminals 6 employed with the support as may be required or necessary for the coils to be formed on the support.

If desired the terminal 5 may be made so that its lugs 8 engage with walls 5 of grooves which are not adjacent but may engage walls of grooves remote from one another.

The support represented by S in Fig. 2 has a plurality of pairs of grooves 2 and may carry a plurality of coils in dot-dash lines such as C, C and C". The construction shown is merely for illustrative purposes and as previously stated the terminals to be referred to may be applied to the support before or after the coils are formed thereon.

The coil C may have its oposite ends connected to terminals i l and it. One end of coil C may be secured to terminal l8 and its other end may extend along through a groove 2 beneath coil C to a terminal 22. The coil C may have its oposite ends connected to terminals 24 and 26, and another terminal such as 23, or as many other terminals as may be desired, may be carried by the support S for various purposes and may or may not be connected to a coil or coils.

The support, coils and terminals as shown in Fig. 2 are for purposes of illustration to explain how the terminal may be attached to the support in various relationships and as before stated the terminals may be applied to the support S prior or subsequent to the forming of the coil or coils and they may be snapped to the support in the desired location or moved along the support to the desired location.

From the foregoing it will be observed that the terminals yieldingly engage the support so that they may be easily and readily applied, while at the same time they are adjustable longitudinally thereof.

The end W of a coil wire may be wound about a terminal such as 6 as shown in Fig. 3 and a connecting wire such as 36 may be inserted in the eye or loop ll] of the terminal and solder applied thereto. It will be quite obvious that when the wire W is soldered to the terminal that the opposite sides thereof are thereby held against separation so that the terminal is no longer yieldable and is therefore fixed so as not to be displaced accidentally. In some cases it may be desired to merely solder the members l2 of the terminal. The solder without the wire W secures the sides of the terminal together and holds it against separation. In that way the terminal may have other functions than to serve as a terminal for the end of a coil.

It will be evident from the foregoing description that the novel construction is adapted for broad application and that the terminal, whether it be used as a terminal or for other purposes, is easily and readily attached to the support, may be adjusted longitudinally thereof, and may be soldered or wound by wire in such a way that it is no longer yieldable whereby it is retained against accidental displacement.

While I have described the invention in great detail and with respect to the present preferred form thereof, it is not desired to be limited thereto since many changes and modifications may be made therein without departing from the spirit and scope of the invention.

What it is desired to claim and secure by Letters Patent of the United States is:

1. The combination with a coil support having longitudinal grooves provided with side walls of, a terminal formed from a single strip of metal bent upon itself intermediate its ends to provide a wire-receiving loop with parallel side portions extending downwardly therefrom and portions extending outwardly from said side portions in opposite directions and having downwardly extending lug portions for yieldingly engaging said side walls of the different grooves, said terminal being arranged to slide along said support and said side portions thereof adapted to be secured against separation whereby said lug portions securely grip said side walls.

2. The combination with a coil support provided with separate longitudinal grooves each having side walls disposed generally radially with adjacent walls of adjacent parallel grooves converging inwardly towards each other, of a terminal comprising, a strip of metal bent intermediate its ends to form a loop with side portions extending outwardly therefrom which terminate in lugs angularly disposed so as to engage said walls, said side portions being yieldingly separable whereby said lugs may be snapped into engagement with said walls.

3. The combination with a coil supoprt hav ing longitudinal groves each being provided with side walls disposed generally radially of, a terminal formed from a single strip of metal bent upon itself providing a wire-receiving loop with parallel side portions extending downwardly therefrom and having downwardly extending lug portions for yieldingly engaging said walls of different of said grooves, said terminal being arranged to slide along said support and said side portions thereof adapted to be secured against separation whereby said lug portions securely grip said Walls.

HERBERT F. OLIVER. 

